Home / 379,473.12-523,641.51-209,706.84

Finding the Fourth Proportional to 379,473.12, 523,641.51 and 209,706.84

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Solution

The fourth proportional to 379,473.12, 523,641.51 and 209,706.84 is: 289,378.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,473.12 : 523,641.51 = 209,706.84 : x
  2. Step 2: Convert to fraction form
    379,473.12/523,641.51 = 209,706.84/x
  3. Step 3: Cross multiply
    379,473.12x = 523,641.51 × 209,706.84
  4. Step 4: Simplify right side
    379,473.12x = 109,811,206,354.93
  5. Step 5: Solve for x
    x = 109,811,206,354.93/379,473.12
  6. Step 6: Final answer
    x = 289,378.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.